*{
    padding:0;
    margin:0;
}
body{
    background: rgb(238, 237, 237);
}
a:hover{
    text-decoration: none;
}
ul{
    list-style-type: none;
}
.navbar{
    background: #fff;
    margin: 0;
    border: none;
}

/* .navbar-nav{
    height:80px;
} */
.navbar-nav>li{
    height:80px;
}
.navbar-nav>li>a{
    height:80px;
    line-height: 40px;
    font-size: 20px;
}
.navbar-header{
    height: 80px;
} 
.nava{
    display: inline-block;
    width: 100px;
    height: 40px;
    border: 1px solid #000;
    border-radius: 30px;
    line-height: 40px;
    font-size: 20px;
    color: #000;
}
.nava:hover{
    background: #000;
    color: #fff;
    text-decoration: none;
}
.navbar-right{
    height:80px;
    line-height: 80px;
}

.dropdown-menu{
    width:1000px;
}
.dropdown-menu>li{
    float: left;
}
#box{
    width: 900px;
}
#box{
    margin-top: 100px;
}
#box img{
    width: 100px;
    height: 100px;
    display: block;
    margin: 0 auto;  
}
#popo{
    margin-top: 200px;
}
#opop{
    margin-top: 100px;
}
/* #box div{
    width: 300px;
    height: 200px;
    margin-left: 100px;
} */
#toutou img{
    width: 100%;
    height: 100%;
}
#zhong{
    margin-top: 50px;
    margin-bottom: 50px;
}
#box2 img{
    display: block;
    width: 80%;
    height: 200px;
    margin: 0 auto;


}

#box2 div{
    width: 370px;
    height: 400px;
    border-radius: 10px;
    padding-top:20px; 
    border: #000 1px solid;
}
#box2 div h3{
    color: #000;
    width: 100%;
}
#box2 div:hover{
    background: #ccc;
}
footer{
    background: #ddd;

}
footer a{
        color: #000;
}